Older versions of 1.12.2 forge won't install.

[maznqrchetoBG]

Hello, so recently i downloaded a mod, that only worked on an older version of 1.12.2 forge (14.23.4.2759), but when i turn the ,jar installer on, the installation window won't pop up. I also tried to run it from the CMD, and this is what error it gives me: 

i searched all over the internet, but couldn't find a solution.

[LexManos]

1) Old versions are not supported
2) Read the announcements.
3) But a minimal amount of effort into trying to fix your own problems.